无法通过以太网电缆连接两台机器

2024-6-19 • tag-icon

我有两台 Ubuntu 机器，通过以太网电缆连接，机器 A 的接口为 eth0，机器 B 的接口为 eth6。我在两台机器上都配置了 IP。

机器 A 上的 ifconfig -a（仅显示 eth0）：

eth0      Link encap:Ethernet  HWaddr 98:90:96:9b:83:f1  
          inet addr:100.0.2.1  Bcast:100.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::9a90:96ff:fe9b:83f1/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:372 errors:0 dropped:0 overruns:0 frame:0
          TX packets:280 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:101005 (101.0 KB)  TX bytes:30148 (30.1 KB)
          Interrupt:20 Memory:f7c00000-f7c20000

机器A上的route -n：

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         203.135.63.1    0.0.0.0         UG    0      0        0 eth3
100.0.2.0       0.0.0.0         255.255.255.0   U     0      0        0 eth0
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth3
203.135.63.0    0.0.0.0         255.255.255.192 U     1      0        0 eth3

机器 B 上的 ifconfig -a（仅显示 eth6）

eth6      Link encap:Ethernet  HWaddr ec:08:6b:0b:85:72  
          inet addr:100.0.2.3  Bcast:100.0.2.225  Mask:255.255.255.0
          inet6 addr: fe80::ee08:6bff:fe0b:8572/64 Scope:Link
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:90 (90.0 B)

在机器B上路由-n：

Kernel IP routing table Destination     Gateway         Genmask        Flags Metric Ref    Use Iface
0.0.0.0         10.102.72.1     0.0.0.0         UG    0      0        0 eth7
10.102.72.0     0.0.0.0         255.255.254.0   U     1      0        0 eth7
100.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 eth0
100.0.2.0       0.0.0.0         255.255.255.0   U     0      0        0 eth6
169.254.0.0     0.0.0.0         255.255.0.0     U     1000   0        0 eth0

当我从机器 B ping 100.0.2.1 时，我得到了以下信息：

PING 100.0.2.1 (100.0.2.1) 56(84) bytes of data.
From 100.0.2.3 icmp_seq=1 Destination Host Unreachable
From 100.0.2.3 icmp_seq=2 Destination Host Unreachable
From 100.0.2.3 icmp_seq=3 Destination Host Unreachable
From 100.0.2.3 icmp_seq=4 Destination Host Unreachable
From 100.0.2.3 icmp_seq=5 Destination Host Unreachable
From 100.0.2.3 icmp_seq=6 Destination Host Unreachable
From 100.0.2.3 icmp_seq=7 Destination Host Unreachable
From 100.0.2.3 icmp_seq=8 Destination Host Unreachable
From 100.0.2.3 icmp_seq=9 Destination Host Unreachable
^C
--- 100.0.2.1 ping statistics ---
11 packets transmitted, 0 received, +9 errors, 100% packet loss, time 10054ms
pipe 3

请让我知道我做错了什么。